122 REPTILES. 



occiput to the tip of tail, each occupying one scale and two halves ; 

 bellv and outer row of scales uniform whitish. Length of cleft 

 of mouth -1^2" ; length of tail 3^" ; total length 141". 



4. GoNYOSOMA, Wagl. 



Dryadida; with smooth teeth, equal in length. Head with 

 flat crown and a much-elongated muzzle ; one anterior and two 

 posterior ocular shields ; two nasals ; body very long, com- 

 pressed, much higher than broad; belly flat; vei.tral plates an- 

 gularly keeled and recurved on the sides; tail long. Scales 

 moderate, lanceolate, along the back less elongate than on the 

 sides. t 



Gonyosoma, Wagl. Nat. Syst. derAmph. p. 184 ; Dnm. Sf Bibr. 

 vii. p. 213. Herpetodryas, sp., Schlegel, Cantor, &c. Tyria, 

 sp., Fitzinger. Coluber, sp., auct. prior. 



1. Gonyosoma oxycephalum. 



Coluber oxycephalus, Reinw. ; Boie, Isis, 1827, p- 537- Tyria 

 oxycephala, Ji^itz. Neue Classif. p. 60. ? Coluber ca^rulescens, 

 Lmn. Mus. Ad. Fried, t. 20. f. 2; Daudin, Rept. vi. p. 320; 

 Shaw, Gen. Zool. iii. p. 514 ; {Merr. Tent. p. 112. Natrix cseru- 

 lescens= Drvophylax viridissimus). Coluber subcyaneus, iMcep. 

 Quadr. Ovip. ii. p. 239. Gonyosoma viride, Wagl. Icon. t. 9, 

 and Nat. Syst. p. 185. Herpetodryas oxycephalus, Schleg. Ess. 

 t. 7. f. 8-10, and Ahbildg. t. 44. f. 1-9 (Java) ; Cantor, Catal. of 

 Malayan Rept. p. 80. Gonyosoma oxycephalum, Dum. Sf Bibr. 

 vii. p. 213. 



Scales in twenty-three to twenty-five rows ; loreal shield very 

 slender, elongate. Head with a dark streak above the lips 

 through the eye on each side of the neck. 



Var. A. Above green (in spirits blue), beneath yellowish. 



a. Adult. Java. From the Leyden Museum. 

 h, c. Adult and half-grown. JavaV From Mr. Argent's Col- 

 lection. 



d. Adult. Borneo. Presented by Sir James Brooke. 



e. Adult. Borneo. Presented by Captain Sir £. Belcher. 



/. Adult. Philippine Islands. From Mr. Cuming's Collection. 

 g. Young : injured. Philippine Islands. From Mr. Cuming's 



Collection. (Posterior frontals divided into two.) 

 h. Adult : rather discoloured. Singapore. Presented by General 

 Hardwicke. 



